With the help of OBD2 diagnostic scanner hardware, the Torque Pro apps for Android give you a peek into the inner workings of your car’s brain. It is able to
-View live OBD engine data on your Android phone,
-Design your own layouts and custom dials, use your own themes with the fully customizable dashboard screens
-Retrieve Fault Codes (DTCs) and clear Check Engine lights – View fault descriptions using the built-in databases
-Upload live OBD2data to your webserver or the torque web viewer in real-time
-Check the performance of your vehicle with BHP / Torque / 0-60 & Quarter Mile widgets

DashCommand is an app for your car. It turns your Android phone or tablet into an advanced display for your engine data. DashCommand is compatible with Bluetooth ELM327 OBD-II hardware. It is a great app that is able to detect horsepower, torque or acceleration in real time, monitor and improve your gas mileage or fuel consumption and much more function options for your vehicle.
3) Free Download OBDScope V1.21 app for Bluetooth elm327 scan tool on Symbian system

OBDScope is vehicle On-Board diagnostics software for S60 smartphones. The software uses Bluetooth to connect to an OBD2 scan tool which is connected to vehicle. The software then uses the OBD2 scanner to access the data available on the ECU of the vehicle. The data can be monitored in real time or it can be logged to a file for further analysis.